Tank-car valve



Nov. 16 1926.

D. B. YOUNG TANK CAR VALVE Filed Nov. 21, 1924 min? 'IIIIIIIIIIIIIII @Hk z new Patented Nov. 16, 1926.

UNITED STATES DAVID B. YOUNG, OF LAWRENCEVILLE IILHVOIS.

TANK-CAR VALVE.

Application med November 21, 1924. Serial No. 751,349.

Another feature of the herein described construction. consists in the provision of automatically compressible packing associated with the valve which permits a read operation of the valve and insures a tight t of the valve in closed .position.

Other advantages and features of construction will appear more fully as this 'description .proceeds especially when consid ered in connection with the accompanying drawing, wherein p,

Figure 1 is a vertical sectional view partly in' elevation of a valve constructed in accordance withmy invention, a portion of the tank car being illustrated to show the relative positionof the .valve thereto. I

Figure 2 is a horizontal sectional view taken substantially on the plane indicated by the line 2 2 in Figure 1.

Figure 3 is a horizontal sectional view taken substantially on the plane indicated by the line 3-3 in Figure 1.

"- 'Figure 4 is a separate sectional perspective view of the valve sleeve assembly; and

Fig. 5 is a fragmentary vertical sectional View similar to,Fig. 1 showing a slightly modified form of outlet leg.

Referring now more particularly to the drawings wherein reference characters designate like parts, it will be noted that a ortlon of a tank car 10 is illustrated, the ottom 11 of which is provided with an outlet to be controlled by the herein described valve. In the upper portion 12 of the tank cart here is mounted a bracket 13 which guidingly supports a valve operating stem 'or rod 14:, provided with a hand wheel 15.

The main valve stem 16 is connected to the 'rod 14 by a knuckle joint 17, thus eliminating side strains and stresses which might otherwise be imparted to the valve bonnet,

.yet to be described with which the stem 16 engages.

This improved valve assembly can be asthreaded sociated with and built into the standard outlet leg 18 of the tank car, merely by properly machining the upper part of the leg to receive it.

The valve assembly includes a valve bonnet 19 provided with a plurality of ports 20, and threadedly engages the u per end of the outlet leg 18, asindicate at 21. The

ortion 22 of the stem 16 passes through tii that a rotation of the stem 16 will cause an operation of the valve sleeve, yet to be described.

A valve sleeve" 23 is mounted for reciprocation within the outlet leg 18 and the honnet 19 and is provided with a plurality of ports 24' adapted to register with the ports 20 in the open position of the valve. The upper end of the valve sleeve 23 is recessed to receive a nut or cap 25, threaded onto the end of the stem 16 and secured thereto by a pin 26. The upper end of the sleeve 23 is also reduced to form a shoulder which is threaded for engagement by a cap 27, which bears-against the nut or cap 25, thus connecting the stem 16 to the valve sleeve 23.

The cap 27 is provided with a circumfer' ential shoulder 28 which is adapted to engage an annular extension 29 formed on a gland member 30, the gland member 30 being shouldered to produce the extension 29.

rality of packing rings 31surrounding the valve sleeve 23 and resting in a recess formed in the outlet leg 18.

Obviously, whenthe valve is operated to raise the sleeve 23, to bring the ports 20 and 24 into registration in the open position of the valve, the shoulder 28 formed on the cap member 27 is moved away from the gland member 30 and pressure is relieved from ofi the packing rings 31. Consequently, the valve may-be opened easily, thefreedom of the packing rings and gland, during the opening of the valve permitting the same to operate with facility. As the valve is moved into closed position, the shoulder will engage the circumferential extension 29 on the gland 3 0 and thus displace the same to compressthe packing rings 31, thus preventing the escape of the tank car contents along the sleeve. The shoulder 28 together with the gland member 30 also constitute an auxiliary valve which when the parts are in the posithe tank car into the outlet leg, as will be readily understood.

It will be noted that inasmuch as the valve bonnet 19 see its connection with the stem. 16 are contained within the tank car, that element 6f protection is afiorded with the result that even though the outlet leg 18 Beeeaes shaken, the valve will not be-.

come iiliseat'ed and thecont'ents of the tank car may be preserved. That is to say, it frequently happens in actual practice, in cases hi derailment of tank cars that the outlet legs such as 18 are broken oil intermediate their ends hr in some cases, they are completely torn from the car, in which event the pettibns etthe tankv immediately surrounding the eiutiet valve is so distorted that the valve is either unseated entirely or it leaks to such an ,eiit'e'nt that some or all of the centents of the car are lost. In order to prevent the tea-ring of the outlet leg from the car under these conditions, and to insure in the ease of accident that it will fracture intermediate its ends, in many instances these legs are. provided with circumferential grooves at suitable points which so weaken the walls of the legs that in the event'that contact with the ties, rails, or other portions oi the road bed, in the event of derailment of-a car, they will break or fracture at these weakened oints. In the present case, such fracture rings 35 may be provided if desired, see Fig. 5,- although they are not believed to be essential since it--- has been found that outlet legs such as those shown usually fracture at a point 36 adja cent the port holes 24. Also that the valve sleeves themselves will break at these port holes since it is at this point that the valve sleeve contains the least metal and therefore, is the weakest; but even in such a case, the solid upper part of the sleeve 23 will be held seated by t e engagement of the stem 16 with the 'valve bonnet 19. If desired the valve sleeve 23 may be provided with a fracture ring or groove 37 upon its interior surface above the ort holes 24 but in view of the weakness 0 the said ring atthe said port holes, it is not deemed necessary that such fracture ring be made.

Thestructure herein described is of a relatively simple design, thus offering the possibility of economy in manufacture and assembly. Furthermore, as has been hereinbefore mentioned, the construction of this valve adapts it for use in connection with the outlet legs, now standard equipment on tank cars,

While one embodiment of the invention has been described and illustrated herein in some detail, it will be readily understood that various modifications of this structure may be resorted to without departing from the spirit of my invention and; to this end reservation is made to make such changes as may come within the purview of the accompanying claims.

Having thus described my invention, what I claim isr- 1. In an outlet valve for tank cars, an outlet leg having a smooth here. adapted to be secured on the exterior of the car, said leg having a fracturable portion intermediate its ends; a hollow valve sleeve freely longitudinally slidable within said bore,- provided with a solid head and with ports in its walls beneath said head, said head in the closed position of the valve been ying a position within said leg above said racturable portion, and said ports occupying positions opposite said fractu'rable portion; and means for moving said sleeve to bring said ports into and out of said leg.

2. 'A tank car valve for use in connection with a tank car provided with an outlet leg comprising a bonnet threaded into areoess formed on the upper end of said leg, a valve sleeve mounted for reciprocationwithin said outlet leg and bonnet, a valve stein secured to said sleeve and thr'e'adedly engaging said bonnet for reciprocating saijd 'val've sleeve, said valve sleeve and bonnet being provided with portsadaptedto registerin the open position of the valve, said outlet leg being further recessed to receive a packing gland and rings arranged around said sleeve, and a pro ection formed on said valve sleeve and engaging said' gland for' compressing said packing in the closed position of said valve.

3'. An outlet valve for tanklcars comprising in combination an outlet leg for said cars having a bore and a counterbore; a valve sleeve having ports in the walls thereof, slidably mounted in the bore of said leg;

compressiblepacking in said counterbore; a

glandin said counterbore above said packing; a valve bonnet having openings in its walls 'adapted to register with said sleeve ports when the valve is open, one end of said bonnet entering said counterbore and retaining said gland therein; and means carried by said sleeve provided with a shoulder adapted to engage said gland to coinpress said packing when said valve is closed, said shoulder serving when in engagement with said gland as an auxiliary valve.

In testimony whereof I aflix 'my signature.

DAVID B. YOUNG. 

